Oh, I need to do a post called, "Anthro and me" some day, for similar reasons.
I hear you say, I love the colors, and I can relate to that on a) good purchase decisions and b) bad purchase decisions. I have to remind myself to think about the whole package.
So I'd ask, what do you like about this top, including and besides color? Does it suit your style and how you view yourself and how you want to appear? Do you think you look fab in it and have a great way to style it? That is more important than whether there is any age limit (even though there are probably some good candidates for "don'ts" at certain ages). I think it's fair to say it's a silhouette that tends to be worn more by younger women and so has that risk of being too much trouble to work with, but doesn't mean it can't be styled to look less girlish and more....boho-chic or whatever would be the term. And 40 y/o's can wear a lot of things I can't anymore. So you're not very old!
I like Laura's comments--the fabrication plays a role in a lot of young vs. grown-up items and frumpy vs. fashionable. With Anthro items, I really have to see them in person. If that is okay, then I could see the companion items in the outfit. I could see the right pants, footwear and handbag, even jewelry, giving totally different vibes from what a college student might wear.
Also, you could probably remove the ties and use another form of fastener, if you wanted to go to that trouble and if it makes a difference.